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2. UBL Invoice
3. ubl:Invoice
4. cac:InvoicePeriod
5. cbc:StartDate

The date when the Invoice period starts. Format = "YYYY-MM-DD".

Cardinality

0..1

Namespace

cbc urn:oasis:names:specification:ubl:schema:xsd:CommonBasicComponents-2

Data type

Date

Example value

2017-10-01

Business terms

BT-73

Rules

Identifier/Error message	Flag
BR-CO-19 If Invoicing period (BG-14) is used, the Invoicing period start date (BT-73) or the Invoicing period end date (BT-74) shall be filled, or both.	fatal
PEPPOL-EN16931-F001 A date MUST be formatted YYYY-MM-DD.	fatal